Apple Inc.

Lucia Gan

Yi-Kuei Ryan Wu

Mohamed Mahmoud

Configurations for an optical device used for light splitting and wavelength locking are disclosed. The optical device may be a two by three coupler with a first waveguide coupled to a second waveguide, and a third waveguide coupled to the second waveguide. The first and third waveguides may receive input light and optically couple light to the second waveguide. The output signals of the first, second, and third waveguides may have a constant phase difference from one another over a broadband wavelength range, which may allow for phase unwrapping. By phase unwrapping the output signals over an FSR and performing further phase unwrapping over the broadband wavelength range, a continuous signal may be produced and used to sequentially lock each wavelength of light emitted by light sources over the broadband wavelength range.

Coupling devices and methods, wavelength locking systems and methods, and phase unwrapping systems and methods

Configurations for an interferometric device used for multiplexing and de-multiplexing light are disclosed. The interferometric device may include a first input waveguide, a second input waveguide, an interferometric waveguide, and an output waveguide. A fundamental mode of light may be launched into the first and second input waveguides, and the interferometric waveguide may receive the fundamental mode and generate a higher order mode of light, where the two modes of light may be superimposed while propagating through the interferometric waveguide. The two modes of light may be received at an output waveguide that collapses the two modes into a single mode. The light propagating through the interferometric device may be used for increasing optical power even though the wavelengths of light may be different from one another. Additionally, the interferometric device may reduce coherent noise.

Growing community of inventors

Mountain View, CA, United States of America

Lucia Gan